as I got the time to update my Gentoo installation for the first time since months, I have one problem left that prevents me from getting all newest package versions installed and finish the major update.
Independent of which version of the package app-crypt/mit-krb5 I use (tried with 1.11.4 and 1.12.1 from the portage) the build always fails.
As I use a tmpfs for /var/tmp/portage (limited to 12 GB) I have already tried with a local /var/tmp/portage which didn't improve anything.